除草剂的分类_爱下问搜题

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问题问答题简答题

除草剂的分类

答案

参考答案：根据施用时间：

1.苗前处理剂

2.苗后处理剂

3.苗前兼苗后处理剂

根据对杂草和作物的选择性：

1.选择性除草剂

2.非选择性除草剂或灭生性除草剂

根据对不同类型杂草的活性：

1.禾本科杂草除草剂

2.莎草科杂草除草剂

3.阔叶杂草除草剂

完形填空

Zhang Yishan studies in Beijing Movies University now. And Yang Zi is in his class, too . You don’t know__1__ very well, do you? __2__do you know Home With Kids ?Many people like the __3__and their three children in it . Today ，let’s talk about Zhang Yishan . He __4__Liu Xing in the play Home With Kids.
Zhang Yishan was born on May 5,1992. Black and white are his favorite__5__. His favorite __6__is the monkey. Zhang Yishan likes __7__.He sings very well. He can also do Chinese kung fu .He _8___Chinese kung fu for 5 years .And he is good at basketball .Lin Junjie and Jay Chou are his favorite __9__.
Zhang is very __10__ now. He studies at school and works after class .Let’s hope he can be a great actor.

完形填空

缺词填空先通读下面的短文，掌握其大意，然后根据短文内容和所给首字母，在空格内填入一个适当的词。所填单词在题后横线上必须完整写出。

I think too many people take weight-loss pills without really knowing that they can do

h 小题1: to their health. I read about a Canadian actress who had to go to h 小题2: because she took some weight-loss pills. She lost 7 kg in two months. However, in the pills there’s something that c 小题3: liver (肝脏) failure, so she had to get a new liver. Luckily, a Chinese young man d 小题4: part of his liver to save her life.

R 小题5: , my cousin has read about a new weight-loss pill and she really wants to try it. I’ve told her the story of the actress, but she won’t l 小题6: . She’s only 12, but she has become a girl who cares about her figure (体型) and how she looks. She often r 小题7: to eat. My aunt is worried that my cousin will buy the pills in s 小题8: . She says h 小题9: is priceless. She thinks that children must eat properly as they are g 小题10: all the time. I think she is right.